EMP径向滑动轴承三维热弹流有限元分析与研究  

Three dimensional TEHD finite element analysis and research of EMP radial sliding bearing

作　　者：石晓祥[1] 张颖[2] 张国贤[2] 

机构地区：[1]上海交通大学塑性成形工程系,上海200030 [2]上海大学机械自动化学院

出　　处：《机械设计》2000年第10期27-29,共3页Journal of Machine Design

基　　金：国家自然科学基金!资助项目 (597750 37)

摘　　要：EMP径向滑动轴承的热弹变形对轴承的润滑性能影响较大。当采用Winkler假设将其简化为梁来计算时与实际结果相比误差较大。为此采用了一种轴承热弹流有限元分析的计算模型 ,按照三维有限元的方法对其进行了全面的热弹变形分析 ,同时结合广义雷诺方程、能量方程等进行耦合计算和分析。计算表明 :三维有限元方法同Winkler假设相比 ,更能反映油膜和轴瓦的温度分布 ,有助于揭示轴承的润滑特性。The thermal-elastic deformation of EMP radial sliding bearing makes rather big influence on lubrication properties of bearing.The result claculated from taking winkler hypothesis to let the deformation be simplified as a beam shows a rather big error compared with practical result.This paper adopted a kind of calculation model of finite element analysis on thermo-elastic-hydrodynamics and carried out an overall analysis on thermal-elastic deformation according to 3-D finite element method.In the meantime the coupled calculation and analysis are carried out by combining with generalized Regnolds equation and energy equation.The calculation shows that the 3-D finite element method can reflect temperature distribution of oil film and bush more better when compared with winkler hypothesis,and is helpfue to reveal the lubrication property of bearings.

关 键 词：热弹流 有限元 六面体单元 EMP径向滑动轴承 

分 类 号：TH133.31[机械工程—机械制造及自动化]